We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
164 RICHARDSON'S BLUEBOOK OF PROJECTION
blue has been mixed to give the paint a decided blue tint while in the pot. It's the laundryman's principle of putting blue in the rinsing water to whiten the clothes. Mix the paint rather thin and let each coat dry thoroughly before applying the next. It is a "flat," quick-drying paint, and must be applied fast to avoid brush marks and "laps." When finished the surface will reflect well and have excellent power of diffusion. Apply a new coat as soon as the new surface has dulled. Where the air is laden with dust, gases and carbon dust, a new coating should be applied probably every three months. Where the air is pure the screen will remain fresh and clean for longer intervals.
Kalsomine
(66) Another surface which gives excellent results, though it lacks the high reflection power of paint, is a white kalsomine selling under the trade name of "Alabastine." All patent kalsomines are good, but alabastine has properties particularly favorable to screen surfaces.
Size the screen as previously indicated. Mix the kalsomine according to directions contained on the package. Apply with a good kalsomine brush, working fast to avoid laps. Don't attempt to use a cheap, poor brush. Unless some theatre employee understands how to apply kalsomine it will be best to have a local painter do the job.
Kalsomine surfacing costs very little and can be washed off easily before applying a new coating. Many exhibitors have used it with good results.
Recoating Perforated Screens
(67) When it becomes necessary to recoat a perforated screen, it should be sent to the manufacturer or be done at the theatre by his own men. The exhibitor can attempt it himself but the results cannot be guaranteed. (68) The difficult thing is to avoid partially filling in the perforations.
Either paint or kalsomine should be used — these